Hangzhou Bright Rubber Plastic Product Co., Ltd. is one of the leading manufacturers and suppliers of compression molded epdm rubber bumper, custom sized silicone rubber bumper, moulded nonstandard shaped natural rubber bumper in China. If you're going to buy compression molded epdm rubber bumper, custom sized silicone rubber bumper, moulded nonstandard shaped natural rubber bumper made in China, welcome to get more information from our factory. We also accept customized orders.
Product Show

Material Selection and Properties
We offer three primary elastomers, each serving distinct functional needs:
EPDM Rubber: EPDM is utilized for applications requiring high resistance to weathering, ozone, and UV exposure. It maintains stable mechanical properties across a broad temperature range and exhibits excellent water and steam resistance. This makes it suitable for outdoor enclosures, automotive exterior components, and HVAC systems.
Silicone Rubber: Silicone is specified for extreme temperature environments, typically ranging from -50°C to +200°C. It retains its elasticity without significant hardening or softening at temperature extremes. Additionally, silicone is chemically inert and meets various food-contact and medical-grade standards when required.
Natural Rubber: Natural rubber provides superior tensile strength, tear resistance, and resilience compared to many synthetic alternatives. Its high elasticity makes it ideal for heavy-duty shock absorption and dynamic load applications. We compound natural rubber to specific durometers to balance softness for impact absorption with sufficient stiffness to prevent bottoming out.

Manufacturing Process
All three bumper types are produced using compression molding. Pre-weighed rubber blanks are placed into precision-machined steel molds and subjected to controlled heat and pressure. This process ensures complete cavity fill and uniform vulcanization. We monitor cure times and temperatures for each compound to achieve optimal cross-linking. Over-curing leads to brittleness, while under-curing results in poor mechanical properties; our process parameters are calibrated to maintain consistency across production runs.
Post-molding, bumpers undergo deflashing and dimensional inspection. Critical dimensions are verified using calibrated gauges, and visual inspections check for surface defects, porosity, or incomplete fills. For bumpers with metal inserts, we verify bond integrity through adhesion testing, as the rubber-to-metal interface is often the critical failure point under dynamic loading.


Customization and Nonstandard Geometries
A significant portion of our production involves nonstandard shapes that cannot be sourced from standard catalogs. Our customization capabilities include:
Dimensional Flexibility: We manufacture bumpers to exact client-specified dimensions, accommodating tight spatial constraints or specific stroke requirements for energy absorption.
Complex Geometries: Compression molding allows for complex profiles, including undercuts, internal cavities, and multi-durometer constructions. We can integrate metal inserts, threaded studs, or mounting flanges directly into the molded part.
Compound Tailoring: Beyond standard formulations, we can adjust durometer, add flame retardants, or incorporate conductive fillers based on application requirements.
Engineering Collaboration
We approach custom bumper development as a technical partnership. Clients provide functional requirements-load capacity, deflection limits, environmental conditions, and mounting constraints-and we translate these into manufacturable designs. Where necessary, we recommend geometry modifications to improve moldability or enhance performance without compromising function. Prototype samples are produced for fit and function validation before full production runs are authorized.
Our objective is to deliver bumpers that perform reliably in their intended application, manufactured to consistent quality standards with clear communication throughout the production process.

PRODUCTS SATNDARD:
| QUALITY CERTIFICATE | ISO 9000, TS16949, FDA, REACH, ROHS |
| MATERIAL STANDARD | ASTM D2000, SAE J200 OR AS PER DRAWING |
| TOLERANCE STANDARD | RMA A1,A2,A3, DIN ISO 3302-1,DIN-7715/BS-3734 OR AS PER DRAWING |
| COLOR STANDARD | PANTONE COLOR, RAL COLOR |


Hot Tags: compression molded epdm rubber bumper, custom sized silicone rubber bumper, moulded nonstandard shaped natural rubber bumper, china, manufacturers, suppliers, factory, customized, made in China







